package br.com.plenarionews;


import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import br.com.plenarionews.model.FonteNoticias;
import br.com.plenarionews.service.FonteNoticiasService;
import br.com.plenarionews.service.FonteNoticiasServiceImpl;
import br.com.plenarionews.util.DatabaseHelper;

import com.j256.ormlite.android.apptools.OpenHelperManager;
import com.j256.ormlite.dao.Dao;

public class MainActivity extends Activity {

	/**
	 * The {@link ViewPager} that will host the section contents.
	 */
	ViewPager mViewPager;
	
	FonteNoticiasService fonteNoticiasService = new FonteNoticiasServiceImpl();

	private String[] mParlamentsTitles;
	
	private List<FonteNoticias> listaFonteNoticias;

	private DrawerLayout mDrawerLayout;

	private ListView mDrawerList;

	private ActionBarDrawerToggle mDrawerToggle;

	private CharSequence mDrawerTitle;

	private CharSequence mTitle;

	private DatabaseHelper databaseHelper;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTitle = mDrawerTitle = getTitle();
        mParlamentsTitles = getResources().getStringArray(R.array.parlaments_array);
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.left_drawer);
        
        // set a custom shadow that overlays the main content when the drawer opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);

        // set up the drawer's list view with items and click listener
        mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, mParlamentsTitles));
        mDrawerList.setOnItemClickListener(new ListView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                selectItem(position);
            }
        });

        // enable ActionBar app icon to behave as action to toggle nav drawer
        getActionBar().setDisplayHomeAsUpEnabled(true);
        //getActionBar().setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the sliding drawer and the action bar app icon
        mDrawerToggle = new ActionBarDrawerToggle(
                this,                  /* host Activity */
                mDrawerLayout,         /* DrawerLayout object */
                R.drawable.ic_drawer,  /* nav drawer image to replace 'Up' caret */
                R.string.drawer_open,  /* "open drawer" description for accessibility */
                R.string.drawer_close  /* "close drawer" description for accessibility */
                ) {
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        loadFontes();
        
        if (listaFonteNoticias == null || listaFonteNoticias.isEmpty()) {
	        listaFonteNoticias  = fonteNoticiasService.listaFontesNoticias();
	        saveFonteNoticias();
        }
        
        if (savedInstanceState == null) {
            selectItem(0);
        }
		
	}
	
	private void loadFontes() {
		Dao<FonteNoticias, Long> fonteDao;
		try {
			fonteDao = getHelper().getFonteNoticiasDao();
			listaFonteNoticias = fonteDao.queryForAll();			
		} catch (SQLException e) {
			e.printStackTrace();
			listaFonteNoticias = new ArrayList<FonteNoticias>();
		}
		
	}
	
	private void saveFonteNoticias() {
		try {
			Dao<FonteNoticias, Long> fonteDao = getHelper().getFonteNoticiasDao();
			
			for (FonteNoticias fonte : listaFonteNoticias) {
				fonteDao.create(fonte);
			}
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main, menu);
        return super.onCreateOptionsMenu(menu);
    }

    /* Called whenever we call invalidateOptionsMenu() */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        // If the nav drawer is open, hide action items related to the content view
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void setTitle(CharSequence title) {
        mTitle = title;
        getActionBar().setTitle(mTitle);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggls
        mDrawerToggle.onConfigurationChanged(newConfig);
    }
    
    private void selectItem(int position) {
        // update the main content by replacing fragments
        Fragment fragment = new NewsSectionFragment(this, getHelper());
        Bundle args = new Bundle();
       	args.putSerializable(NewsSectionFragment.ARG_FONTE_NOTICIAS_TITLE, listaFonteNoticias.get(position));
        fragment.setArguments(args);

        FragmentManager fragmentManager = getFragmentManager();
        fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

        // update selected item and title, then close the drawer
        mDrawerList.setItemChecked(position, true);
        setTitle(mParlamentsTitles[position]);
        mDrawerLayout.closeDrawer(mDrawerList);
    }
    
    @Override
    protected void onDestroy() {
    	super.onDestroy();
    	
		if (databaseHelper != null) {
			OpenHelperManager.releaseHelper();
			databaseHelper = null;
		}
	}

	/**
	 * You'll need this in your class to get the helper from the manager once per class.
	 */
	private DatabaseHelper getHelper() {
		if (databaseHelper == null) {
			databaseHelper = OpenHelperManager.getHelper(this, DatabaseHelper.class);
		}
		return databaseHelper;
    }
}
